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citen tetes @anni @ffice IMPROVEMENT IN WOOD-PLANING MACHINES.

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TO ALL WHOM IT MAY GONCERN:

Be it known that'I, G. 'EL OBER, of Newbury, in the oountyvof Geauga,and State of Ohio, have invented certain new and useful improvements inRevolving Cutter-Heads; and I do hereby declare that the following is afull and complete description of the same, reference being had to theaccompanying drawings`making a part of this speciiication, in which-Figure 1 is a view of the cutter side of the head.

Figure 2 is an edge view ofthe same.

Figure 3 is a view of the opposite side of fig. 1.

Like letters of reference refer to like parts in the views.

Thishead consists of an iron disk, A, g. 3, with a deep boss, forming aconcave shoulder, B, fig. 2, to which are screwed the adjustable cuttersC, curving outward to the edge of the iange or 'rim D. The periphery ofthis ange or rim is serrated or cut in little furrows, similar to afile, and for which purpose it is practically intended, andalso foranother purpose, as will hereafter be shown. This bend is placed uponthe shaft ofthe lathe in which irregular forms are turned. As thearticle is shaped or cut by -the several cutters C. it is rasped andsmoothed by the tile-like periphery of the head as it leaves or passesfrom the cutters, and thus the work leaves the machine in a morefinished condition than it would vdo without being thus rasped, savingby this means much of the hand labor required' to smooth the article asit vordinarily comes from the machine. I Also, the broad face of theperiphery serves to prevent the stick, as it is being turned, fromtrembling, and for this special purpose it is of great value, as thework, if of some considerable length and of small diameter, requires tobe steadied in a rest in order that 4the turning shall be true andsmooth. To accomplish this many devices` have been used, but with muchtrouble and expense, and in many cases without good results. In thusproviding the head with abroad-face, which, as will be seen, is ush withthe turned part'of the work, gives at once the necessary rest for thework, and the trembling in consequence prevented by this simple andinexpensive rest.

What I claim as my improvement, and desire to secure by Letters Patent,,is- The herein-described cutter-head A, provided with a serrated rim,D, when used as and for the purpose setforth, in combination with theadjustable cutter C.

G. H. OBER. Witnesses:

J. H. BURRIDGE, J. HOLMES.

